[vc_row type="full_width_background" full_screen_row_position="middle" column_margin="90px" equal_height="yes" content_placement="middle" column_direction="default" column_direction_tablet="default" column_direction_phone="default" bg_color="#ffffff" scene_position="center" top_padding="5%" bottom_padding="5%" top_padding_tablet="8%" bottom_padding_tablet="8%" text_color="dark" text_align="left" row_border_radius="none" row_border_radius_applies="bg" overflow="visible" id="home" overlay_strength="0.5" gradient_direction="top_to_bottom" shape_divider_position="bottom" bg_image_animation="none" shape_type="straight_section" gradient_type="default"][vc_column column_padding="padding-4-percent" column_padding_tablet="no-extra-padding" column_padding_phone="no-extra-padding" column_padding_position="right" column_element_direction_desktop="default" column_element_spacing="10px" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" zindex="100" gradient_direction="left_t_to_right_b" overlay_strength="0.3" width="1/2" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" offset="vc_col-xs-12"][vc_row_inner column_margin="default" column_direction="default" column_direction_tablet="default" column_direction_phone="default" text_align="left" row_position="default" row_position_tablet="inherit" row_position_phone="inherit" overflow="visible" pointer_events="all" min_width="47vh"][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="5px" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/1" tablet_width_inherit="default" animation_type="default" enable_animation="true" animation="fade-in-from-bottom" animation_easing="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" enable_border_animation="true"][nectar_highlighted_text color_type="regular" highlight_color="#ff7530" text_color="#ff7530" style="regular_underline" highlight_expansion="default" underline_thickness="1px" delay="400" text_direction="default"] raise the pH of your hot tub, spa or swimming pool [/nectar_highlighted_text][vc_column_text css_animation="none" css=".vc_custom_1718358650346{margin-bottom: 20px !important;}" text_direction="default"] 5kg Blue Horizons pH Plus / pH + [/vc_column_text][/vc_column_inner][/vc_row_inner][vc_row_inner column_margin="default" column_direction="default" column_direction_tablet="default" column_direction_phone="default" text_align="left" row_position="default" row_position_tablet="inherit" row_position_phone="inherit" overflow="visible" pointer_events="all" min_width="47vh"][vc_column_inner column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="5px" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/1" tablet_width_inherit="default" animation_type="default" enable_animation="true" animation="fade-in-from-bottom" animation_easing="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" enable_border_animation="true"][vc_column_text css="" text_direction="default"] pH is a measure of how acidic or how basic water is. The pH range goes from 0 to 14, with 7 being neutral. A pH of less than 7 indicates acidity, a pH of greater than 7 indicates a base. The pH of water is a very important measurement of the water quality of your hot tub. A high pH level in a pool or hot tub water can cause limescale build up, which can damage working parts including pumps, heaters and seals. A powdered product for increasing the pH of swimming pool water Key Features o Easy-to-dose powder for increasing pH o Part of the B.O.A.S.T. System Ideal pH Range: 7.2 – 7.6 The ideal pH level is between 7.2 – 7.6, promoting bather comfort, optimal chemical efficiency and protection of pool plant equipment. Test the pH of your pool water and if it is below 7.2, use Blue Horizons pH Plus to raise it. Application Instructions 1. Pre-dissolve the product in a clean plastic container at a maximum rate of 100g of product per 2.2 gallons (10ltrs) of clean warm water. Stir well to ensure the product is fully dissolved. Carefully add the resulting solution to the pool whilst the pump(s) are turned “on”, preferably near to the water inlets to aid distribution. 2. After a minimum of 8 hours, recheck the pH level and if necessary, repeat the treatment until the ideal pH level is established. Litres Gallons Dose rates 4,546 1,000 50g 11,365 2,500 125g 22,730 5,000 250g 45,460 10,000 500g 68,190 15,000 750g Please note several doses may be required [/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][vc_column column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" gradient_direction="left_to_right" overlay_strength="0.5" width="1/2" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" offset="vc_col-xs-12"][vc_row_inner 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column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="5px" desktop_text_alignment="default" tablet_text_alignment="default" phone_text_alignment="default" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" overflow="visible" gradient_direction="left_to_right" overlay_strength="0.3" width="1/1" tablet_width_inherit="default" animation_type="default" enable_animation="true" animation="fade-in-from-bottom" animation_easing="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid" enable_border_animation="true"][vc_column_text text_direction="default"] Postage If you require delivery to the Scottish Highlands & Islands, Isle of Man, Scilly Isles, Channel Islands, Northern Ireland or outside of the UK mainland please contact us for a postal quote before making your purchase. Thank you. Castle Hot Tubs is a well established and trusted name in the water care industry. We do our very best to ensure that your purchasing experience with us is a pleasant one. If for any reason you are not 100% happy with our service, we will put it right, so please do contact us directly before leaving a negative feedback![/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row type="full_width_background" full_screen_row_position="middle" column_margin="default" equal_height="yes" content_placement="middle" column_direction="default" column_direction_tablet="default" column_direction_phone="default" bg_color="#000000" scene_position="center" top_padding="70" bottom_padding="70" text_color="light" text_align="left" row_border_radius="none" row_border_radius_applies="bg" overflow="visible" overlay_strength="0.95" gradient_direction="left_to_right" shape_divider_position="bottom" bg_image_animation="none" shape_type=""][vc_column column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="center" phone_text_alignment="center" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" gradient_direction="left_to_right" overlay_strength="0.3" width="5/12" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid"][split_line_heading animation_type="line-reveal-by-space" font_style="h2" line_reveal_by_space_text_effect="default" content_alignment="default" mobile_content_alignment="inherit" link_target="_self" text_content="Confused about your hot tub water chemistry? Our guides answer the most Frequently Asked Questions!" text_direction="default"][/split_line_heading][vc_column_text text_direction="default"]Why do I need to test my hot tub / spa / swimming pool water chlorine levels ? Why should I test my hot tub / spa / swimming pool water pH levels ? What about using a shock in my hot tub / spa / swimming pool water?[/vc_column_text][/vc_column][vc_column column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" column_element_direction_desktop="default" column_element_spacing="default" desktop_text_alignment="default" tablet_text_alignment="center" phone_text_alignment="center" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" column_position="default" gradient_direction="left_to_right" overlay_strength="0.3" width="1/12" tablet_width_inherit="default" animation_type="default" bg_image_animation="none" border_type="simple" column_border_width="none" column_border_style="solid"][/vc_column][vc_column column_padding="no-extra-padding" column_padding_tablet="inherit" column_padding_phone="inherit" column_padding_position="all" 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alignment_tablet="default" alignment_phone="default" constrain_group_3="yes" constrain_group_4="yes" display="block" display_tablet="inherit" display_phone="inherit" icon_family="none" link_text="Browse The Range" padding_top="1em" padding_bottom="1em" padding_left="2.3em" padding_right="2.3em" url="https://castlehottubs.co.uk/product-category/own-brand/" margin_bottom="16" font_size_desktop="1.1vw" font_size_tablet="2vw" font_size_phone="16px"][/vc_column_inner][vc_column_inner left_padding_tablet="20%" constrain_group_103="yes" right_padding_tablet="20%" left_padding_phone="8%" constrain_group_105="yes" right_padding_phone="8%" top_margin_tablet="40" column_element_direction_desktop="default" column_element_spacing="10px" desktop_text_alignment="default" tablet_text_alignment="center" phone_text_alignment="center" background_color_opacity="1" background_hover_color_opacity="1" column_backdrop_filter="none" column_shadow="none" column_border_radius="none" column_link_target="_self" 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